AI Product & MVP Development in Barcelona
The best AI Product & MVP Development in Barcelona, at the best available price.
A real, production-grade build you can put in front of users or investors. Frontend, backend, mobile, the agentic AI underneath, and the cloud or private infrastructure it runs on, as one engagement rather than four vendors.
Barcelona has a large startup community and is a common choice for the tech centres of international companies, helped by the 22@ district, Mobile World Congress and a large international workforce. Its scale-ups and tech hubs mostly buy engineering capacity and specialist skills, and English is the working language in much of the scene.
Barcelona attracts international founders who build in English for a European market from the start. The build ships a production product with GDPR handled and code documented for the team you hire locally.
What you get
- Full-stack build on Next.js, Node or Python, with a database and API design that survives past the MVP
- AI where it earns its place: LLM features, retrieval over your own documents, agent flows that call real tools, voice
- Auth, payments, analytics and an admin surface, not a demo that breaks on the second user
- Deployment across AWS, GCP or Azure, or private and on-premise hosting where the data demands it
- Clean, documented code on your own infrastructure, written to make us replaceable on purpose
Final pricing depends on scope, features and complexity, so we settle it on a call before any work starts.
Invoiced in USD or EUR, payable by Wise or bank transfer.
Request a callback
You speak to the engineer who does the work. No sales rep, no deck.
Who builds here
Software Development Company
Barcelona's scale-ups and international tech hubs compete for the same senior engineers. A dedicated senior engineer on a fixed monthly cost adds capacity without joining that contest.
What Barcelona companies build with us
Get it built at $0.
That is not a discount. It is when you pay. The work is split into checkpoints with acceptance criteria written down before anything starts, and each checkpoint is invoiced only after you have seen it and accepted it. No deposit.
- $0 to start
- You hold every dollar until a checkpoint is delivered and you accept it. No approval, no invoice.
- Fixed cost, unlimited features
- Or hire the team outright: one fixed monthly cost, unlimited feature development, any stack.
- The engineer takes your call
- The person on your first call is the one who architects and writes it. No account managers, no bench time.
A US agency quotes $50,000 to $150,000 for the same build and asks for 40 to 50% of it before a line is written. Account managers, project managers, sales commission and bench time. None of it appears in your product.
Three stages, nothing hidden.
Twenty-minute call
You talk to the engineer who will build it, not a sales rep. We scope the problem and you get told plainly if this is the wrong fit.
Fixed proposal in 48 hours
Fixed price, fixed timeline, defined deliverables, in writing. No hourly billing surprises and no open-ended scope.
Weekly demos until it ships
Working software every week, direct access over Slack or WhatsApp, and documentation handed over at the end.
What actually applies here.
Regulation and data
GDPR is enforced by Spain's AEPD, and the Catalan Data Protection Authority (APDCAT) supervises Catalan public bodies and the companies providing services to them. AESIA, based in A Coruña, is Spain's AI Act supervisor, and a national AI governance law was still before parliament in 2026, so check its final form. Spain had not yet finished transposing NIS2 at the time of writing, leaving Royal Decree-law 12/2018 in place for now. DORA has applied to financial entities since January 2025. The EU AI Act has applied in stages since August 2024, with transparency duties from August 2026 and most high-risk obligations now due from December 2027.
Contracting and payment
You contract with an individual consultant based in India. Invoices in EUR or USD, paid by Wise or bank transfer. Your accountant handles an overseas supplier in the usual way, and any documentation they need is provided before access is granted.
Working hours
Four or more hours of daily overlap across your morning, Central European time, with same-day replies on working days.
We supply Catalan public bodies. Does APDCAT apply to us?
It can, when you process personal data on behalf of a Catalan public body. We build the deployment in your own environment and document data flows and access, so you can show APDCAT or your client's data protection officer exactly where data goes.
Can you work in English with an international team?
Yes. Calls, documentation, code review and tickets are all in English, with four or more hours of daily overlap across your morning, Central European time, and same-day replies. Written updates live in your tracker so the rest of the team can follow progress without extra meetings.
Is three days realistic?
For a working, demoable version of a core idea, yes, and that is what the three-day build is. A full production system with billing, admin and hardening takes weeks, not days. We will tell you which one your situation actually needs.
Do we own the code?
Entirely. It ships into your repository on your own cloud accounts, documented so your team or your next hire can pick it up without us.
Can you also host the AI model privately?
Yes, and as part of the same engagement. If compliance means inference cannot leave your network, the serving layer and the application are built together rather than handed between vendors.
MVP Development
A working MVP in as little as 3 days, from $1,000. Production-grade, not a throwaway prototype.